The Vogues' "Five O'Clock World"

A couple days ago, I happened to think of the Vogues' "Five O'Clock World," and I realized something about the melody in the third verse.  The end of the line "She talks, and the world goes slippin' away" has a descending melody.  "Slippin' away" is sung to the phrase B A G# E.  The backing vocals echo that line with "It slips away," which has the same sort of musical representation of slipping.  It's sung to the phrase G F# E G F# E (I think), so there's not a continuous descent, but there is something of a slide.  The melisma for "away" (E G F# E) also portrays that slipping; "away" is sung to more than just the two syllables it's pronounced with.